Create an erupting volcano - Zebra Mix

1 Create an erupting volcano ! Build your o wn volcano and watch it erupt! It's easy to do - you can do this in the sink just to see the 'lava', or make the volcano as directed belo w. Remember the importance of adult supervision, especially with young children. Supplies needed: cardboard 4 oz. plastic cups red food coloring water Baking Soda hand dish washing liquid vinegar or citric acid (sour salt) Making the volcano : Step 1: On a baking sheet or other easily cleaned surface, shape cardboard into broad cone shape, using a 4 oz. cup to form the "crater" at the top of the volcano . Step 2: Paint or decorate volcano as desired. Making the Eruption: Step 1: Mix 1/4 cup vinegar (or 1 teaspoon citric acid) with dish washing liquid, water and red coloring in a plastic cup Step 2: Put 1 teaspoon baking soda in an empty plastic cup.

2 Place this cup inside the volcano crater. Step 3: Quickly pour vinegar/dish washing liquid/ w ater mixture into the baking soda cup in the crater. Watch the lava as the volcano erupts! Explanation: The baking soda reacts with the vinegar (or citric acid) in the mixture and produces a gas, carbon dioxide (CO2). As the gas is released, it bubbles through the dish washing liquid, creating the bubbly, red lava. Variations: Experiment with different mixes of vinegar/dish washing liquid/ water solutions or slurries of the baking soda. Vary which component is added to the crater first, to Create different visual effects.